package com.jiangyao.common.utils;

import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.net.InetAddress;
import java.net.UnknownHostException;

public class Util
{
    /**
     * @Description: 获取IP地址
     * @return: java.lang.String
     */
    public static String getIpAddr(){
        String ipAddress = null;
        try {
            ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
            HttpServletRequest request = attributes.getRequest();

            ipAddress = request.getHeader("X-Real-IP");
            if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
                ipAddress = request.getHeader("x-forwarded-for");
            }
            if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
                ipAddress = request.getHeader("Proxy-Client-IP");
            }
            if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
                ipAddress = request.getHeader("WL-Proxy-Client-IP");
            }
            if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
                ipAddress = request.getRemoteAddr();
                if (ipAddress.equals("127.0.0.1")) {
                    // 根据网卡取本机配置的IP
                    InetAddress inet = null;
                    try {
                        inet = InetAddress.getLocalHost();
                    } catch (UnknownHostException e) {
                        e.printStackTrace();
                    }
                    ipAddress = inet.getHostAddress();
                }
            }
            // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
            if (ipAddress != null && ipAddress.length() > 15) { // "***.***.***.***".length()
                // = 15
                if (ipAddress.indexOf(",") > 0) {
                    ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
                }
            }
        } catch (Exception e) {
            ipAddress="";
        }
        // ipAddress = this.getRequest().getRemoteAddr();

        return ipAddress;
    }

    /**
     * @Description: 路径
     * @return: java.lang.String
     */
    public static String getUploadPath(){
        String realPath = Util.class.getClassLoader().getResource("").getFile();

        if(realPath.startsWith("file:")){
            realPath = realPath.replaceFirst("file:", "");
        }

        while(!realPath.equals("")) {
            System.out.println("realPath:"+realPath);
            File file = new File(realPath);

            //开发环境下面注释,避免文件写入target/class后导致java容器重启
//            realPath=file.getParent();
//            file = new File(realPath);
//            realPath=file.getParent();
//            file = new File(realPath);

            if (!file.isDirectory()) {
                realPath = file.getParentFile().getAbsolutePath();
            } else{
                realPath = file.getAbsolutePath();
                break;
            }
        }

        try {
            realPath = java.net.URLDecoder.decode(realPath, "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        }

        return realPath;
    }
}  